Bluetooth Sync issues (Android Port)

[DMJC]

Hi guys, so I've been daily checkout/building rockbox from svn for about 6 months now. Anyway I recently got a new car stereo from Sony, which syncs to my phone via Bluetooth for hands free calling and Audio streaming. The problem I have is when the phone first connects to the bluetooth system, if you launch rockbox it fails to playback audio via bluetooth. You have to kill rockbox using the running process manager on the phone and run rockbox again before it will start to playback audio over bluetooth. It seems to be a problem that only affects rockbox. As soon as the phone syncs to the bluetooth, call handling works perfectly every time. The other issue I've noticed is that if the bluetooth sync cuts out due to say the engine being turned off, and the radio is then restarted, Rockbox loses it's sync to the bluetooth audio device and it stops playing music on the phone at all (basically freezes, the interface still works but all audio device handling dies, and doesn't restore when the radio is restarted.) The phone however handles this fine, and is able to sync/resync without issue for call handling. The phone does appear to work fine with rockbox for muting rockbox and switching to phone services for calls when the phone is bluetooth synced, and it resumes fine after the call. So it sort of points to the other problems being within rockbox itself.

[a_b_c_d]

Same behaviour on the Motorola Defy+.

[bluebrother]

This has nothing to do with any "sync" thing. Rockbox doesn't sync anything, and audio over bluetooth (A2DP I guess) is nothing sync. It's audio routing, and it looks like there is a problem when Android changes the routing -- Rockbox is not involved in changing the routing.

[lefko]

Rockbox shuts off, stops playing when either the bluetooth device, or wired headphone is unplugged/turned off.  I don't understand how you can dismiss this as unrelated to rockbox when so many people, including me, are having this problem.

[Chronon]

That's not quite what he said.  He said that Rockbox doesn't sync anything and that it's not involved in changing audio routing.  I am sure that both of these statements are accurate.

bluebrother suggested that there could be a problem when Android changes the audio routing.  Do other audio applications behave properly when audio routing is changed?  (I don't have any Android devices so I can't check on any of this.)

[lefko]

What I am saying is that rockbox handles that class (the wired class) of audio sync/sink/audio routing, by automatically shutting off and turning on correctly when the headphone jack is not connected, therefore it should handle the bluetooth class also.

I am only having this problem with rockbox.  I have not extensively tested it, but I am starting to use Deadbeef and have not seen this problem.  This problem is significant.  I really want to use rockbox since I am also using it with several sansa devices in specific applications as a playback device, but I am really, really, getting sick of this issue.

[Mach-X]

The problem I have may or may not be related, but whenever I use rockbox on my phone i have to force close rockbox repeatedly before it will play anything. Sometimes a track will start up fine, other times it will play a split second and stop, then I have to force close repeatedly a random number of times, then it will play. If it helps, I'm stuck on eclair (2.1) because motorola sucks.